10 U.S. Code § 923 - Art. 123. Forgery

(1)falsely makes or alters any signature to, or any part of, any writing which would, if genuine, apparently impose a legal liability on another or change his legal right or liability to his prejudice; or

(2)utters, offers, issues, or transfers such a writing, known by him to be so made or altered;

is guilty of forgery and shall be punished as a court-martial may direct.